If you wanted to save money, you could always go to the website for the corporation commission or secretary of state for your state. They generally have publicly available forms for setting up LLCs.
However, if you have an attorney who regularly handles matters for you, it's a good idea to let him do it. Not because it gives him business, but because it makes sure that your attorney is aware of this company, and has better information in his files on your business and financial situations. Presumably, this attorney is going to be the statutory agent for the LLC, and will handle its legal representation in any matters that may arise. It's much easier for an attorney to represent your LLC if he already has information, and is familiar with, the LLC and its doings. It's sort of one of those "ounce of provision is worth a pound of cure" things.